diff options
Diffstat (limited to 'tools/perf/util/dwarf-aux.h')
| -rw-r--r-- | tools/perf/util/dwarf-aux.h | 165 |
1 files changed, 118 insertions, 47 deletions
diff --git a/tools/perf/util/dwarf-aux.h b/tools/perf/util/dwarf-aux.h index 6ce1717784b7..cd481ec9c5a1 100644 --- a/tools/perf/util/dwarf-aux.h +++ b/tools/perf/util/dwarf-aux.h @@ -1,22 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef _DWARF_AUX_H #define _DWARF_AUX_H /* * dwarf-aux.h : libdw auxiliary interfaces - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * */ #include <dwarf.h> @@ -24,40 +10,62 @@ #include <elfutils/libdwfl.h> #include <elfutils/version.h> +struct strbuf; + /* Find the realpath of the target file */ -extern const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname); +const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname); /* Get DW_AT_comp_dir (should be NULL with older gcc) */ -extern const char *cu_get_comp_dir(Dwarf_Die *cu_die); +const char *cu_get_comp_dir(Dwarf_Die *cu_die); /* Get a line number and file name for given address */ -extern int cu_find_lineinfo(Dwarf_Die *cudie, unsigned long addr, - const char **fname, int *lineno); +int cu_find_lineinfo(Dwarf_Die *cudie, Dwarf_Addr addr, + const char **fname, int *lineno); + +/* Walk on functions at given address */ +int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, + int (*callback)(Dwarf_Die *, void *), void *data); + +/* Get DW_AT_linkage_name (should be NULL for C binary) */ +const char *die_get_linkage_name(Dwarf_Die *dw_die); -/* Walk on funcitons at given address */ -extern int cu_walk_functions_at(Dwarf_Die *cu_die, Dwarf_Addr addr, - int (*callback)(Dwarf_Die *, void *), void *data); +/* Get the lowest PC in DIE (including range list) */ +int die_entrypc(Dwarf_Die *dw_die, Dwarf_Addr *addr); + +/* Ensure that this DIE is a subprogram and definition (not declaration) */ +bool die_is_func_def(Dwarf_Die *dw_die); + +/* Ensure that this DIE is an instance of a subprogram */ +bool die_is_func_instance(Dwarf_Die *dw_die); /* Compare diename and tname */ -extern bool die_compare_name(Dwarf_Die *dw_die, const char *tname); +bool die_compare_name(Dwarf_Die *dw_die, const char *tname); + +/* Matching diename with glob pattern */ +bool die_match_name(Dwarf_Die *dw_die, const char *glob); /* Get callsite line number of inline-function instance */ -extern int die_get_call_lineno(Dwarf_Die *in_die); +int die_get_call_lineno(Dwarf_Die *in_die); /* Get callsite file name of inlined function instance */ -extern const char *die_get_call_file(Dwarf_Die *in_die); +const char *die_get_call_file(Dwarf_Die *in_die); + +/* Get declared file name of a DIE */ +const char *die_get_decl_file(Dwarf_Die *dw_die); /* Get type die */ -extern Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); +Dwarf_Die *die_get_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); +/* Get a type die, but skip qualifiers */ +Dwarf_Die *__die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); /* Get a type die, but skip qualifiers and typedef */ -extern Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); +Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem); /* Check whether the DIE is signed or not */ -extern bool die_is_signed_type(Dwarf_Die *tp_die); +bool die_is_signed_type(Dwarf_Die *tp_die); /* Get data_member_location offset */ -extern int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs); +int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs); /* Return values for die_find_child() callbacks */ enum { @@ -68,21 +76,33 @@ enum { }; /* Search child DIEs */ -extern Dwarf_Die *die_find_child(Dwarf_Die *rt_die, - int (*callback)(Dwarf_Die *, void *), - void *data, Dwarf_Die *die_mem); +Dwarf_Die *die_find_child(Dwarf_Die *rt_die, + int (*callback)(Dwarf_Die *, void *), + void *data, Dwarf_Die *die_mem); /* Search a non-inlined function including given address */ -extern Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, +Dwarf_Die *die_find_realfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); + +/* Search a non-inlined function with tail call at given address */ +Dwarf_Die *die_find_tailfunc(Dwarf_Die *cu_die, Dwarf_Addr addr, Dwarf_Die *die_mem); -/* Search an inlined function including given address */ -extern Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, - Dwarf_Die *die_mem); +/* Search the top inlined function including given address */ +Dwarf_Die *die_find_top_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); + +/* Search the deepest inlined function including given address */ +Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, + Dwarf_Die *die_mem); + +/* Search a non-inlined function by name and returns its return type */ +Dwarf_Die *die_find_func_rettype(Dwarf_Die *sp_die, const char *name, + Dwarf_Die *die_mem); /* Walk on the instances of given DIE */ -extern int die_walk_instances(Dwarf_Die *in_die, - int (*callback)(Dwarf_Die *, void *), void *data); +int die_walk_instances(Dwarf_Die *in_die, + int (*callback)(Dwarf_Die *, void *), void *data); /* Walker on lines (Note: line number will not be sorted) */ typedef int (* line_walk_callback_t) (const char *fname, int lineno, @@ -92,20 +112,71 @@ typedef int (* line_walk_callback_t) (const char *fname, int lineno, * Walk on lines inside given DIE. If the DIE is a subprogram, walk only on * the lines inside the subprogram, otherwise the DIE must be a CU DIE. */ -extern int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, - void *data); +int die_walk_lines(Dwarf_Die *rt_die, line_walk_callback_t callback, void *data); /* Find a variable called 'name' at given address */ -extern Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name, - Dwarf_Addr addr, Dwarf_Die *die_mem); +Dwarf_Die *die_find_variable_at(Dwarf_Die *sp_die, const char *name, + Dwarf_Addr addr, Dwarf_Die *die_mem); /* Find a member called 'name' */ -extern Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, - Dwarf_Die *die_mem); +Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, + Dwarf_Die *die_mem); + +/* Get the name of given type DIE */ +int die_get_typename_from_type(Dwarf_Die *type_die, struct strbuf *buf); /* Get the name of given variable DIE */ -extern int die_get_typename(Dwarf_Die *vr_die, char *buf, int len); +int die_get_typename(Dwarf_Die *vr_die, struct strbuf *buf); /* Get the name and type of given variable DIE, stored as "type\tname" */ -extern int die_get_varname(Dwarf_Die *vr_die, char *buf, int len); -#endif +int die_get_varname(Dwarf_Die *vr_die, struct strbuf *buf); + +/* Check if target program is compiled with optimization */ +bool die_is_optimized_target(Dwarf_Die *cu_die); + +/* Use next address after prologue as probe location */ +void die_skip_prologue(Dwarf_Die *sp_die, Dwarf_Die *cu_die, + Dwarf_Addr *entrypc); + +/* Get the list of including scopes */ +int die_get_scopes(Dwarf_Die *cu_die, Dwarf_Addr pc, Dwarf_Die **scopes); + +/* Variable type information */ +struct die_var_type { + struct die_var_type *next; + u64 die_off; + u64 addr; + int reg; + int offset; + /* Whether the register holds a address to the type */ + bool is_reg_var_addr; +}; + +/* Return type info of a member at offset */ +Dwarf_Die *die_get_member_type(Dwarf_Die *type_die, int offset, Dwarf_Die *die_mem); + +/* Return type info where the pointer and offset point to */ +Dwarf_Die *die_deref_ptr_type(Dwarf_Die *ptr_die, int offset, Dwarf_Die *die_mem); + +/* Get byte offset range of given variable DIE */ +int die_get_var_range(Dwarf_Die *sp_die, Dwarf_Die *vr_die, struct strbuf *buf); + +/* Find a variable saved in the 'reg' at given address */ +Dwarf_Die *die_find_variable_by_reg(Dwarf_Die *sc_die, Dwarf_Addr pc, int reg, + int *poffset, bool is_fbreg, + Dwarf_Die *die_mem); + +/* Find a (global) variable located in the 'addr' */ +Dwarf_Die *die_find_variable_by_addr(Dwarf_Die *sc_die, Dwarf_Addr addr, + Dwarf_Die *die_mem, int *offset); + +/* Save all variables and parameters in this scope */ +void die_collect_vars(Dwarf_Die *sc_die, struct die_var_type **var_types); + +/* Save all global variables in this CU */ +void die_collect_global_vars(Dwarf_Die *cu_die, struct die_var_type **var_types); + +/* Get the frame base information from CFA */ +int die_get_cfa(Dwarf *dwarf, u64 pc, int *preg, int *poffset); + +#endif /* _DWARF_AUX_H */ |